Is it necessary to use special terminals for aluminum alloy cables?

With the development of cable industry, the advantages of copper cable naturally not much, copper cable relative to aluminum cable in the cable market occupies an absolute advantage. However, the high price of copper cable has also caused an increase in production costs. And it’s not easy to construct. And aluminum core cable as a cable industry a “different army” protrusion, favored by the market. Compared with the traditional copper core cable, aluminum alloy cable has what outstanding advantages?

1. Conductive performance under normal circumstances, ordinary aluminum core cable and wire 2 ~ 4 specifications after the conductive performance and copper core cable and wire the same. But the aluminum alloy cable uses the pressing and stranding technology, so that the conductor compaction degree reaches 93% ~ 95%, so that the cable diameter is greatly reduced, according to reliable data, the same electrical performance, aluminum alloy cable only needs to be larger than the copper core cable specifications of a model. We have selected several cable models to compare the electrical performance of copper and aluminum conductors. As can be seen from the above table, the electrical performance of aluminum alloy cables is basically close to that of copper core cables in the case of large cross sections.

2. Mechanical properties; First of all, the aluminum alloy cable because of the new process makes its flexibility greatly improved, compared with the corresponding copper core cable, its flexibility increased by nearly 30%; Secondly, the bending radius of aluminum alloy cable is 7 times outer diameter, while the corresponding copper core cable can only achieve the minimum outer diameter of 10 times; Third, the rebound performance of aluminum alloy cable is 40% smaller than copper core cable, and aluminum alloy cable has no memory, so its rebound performance is significantly better than copper core cable, so, in the process of cable laying, aluminum alloy cable is more conducive to installation and the terminal head of the compression, improve the stability of the terminal.

3. Corrosion resistance; Aluminum alloy cable is mainly composed of aluminum, which is easy to form a dense oxide film in air, which prevents further oxidation of the metal inside the cable. Copper cable will not form oxide film, after the cable surface is oxidized, it will further oxidize the internal metal, when a period of time, copper cable surface oxide off, will be a new round of oxidation, resulting in metal loss. Aluminum alloy cable in the manufacturing process, added rare metals, further improve the corrosion resistance of aluminum alloy cable, reduce the potential difference of different metals, research indicates that 5XXX series aluminum alloy, in the seawater environment will not produce obvious corrosion phenomenon.

4. Connection performance; The alloy composition of aluminum alloy cable greatly improves the connection performance of aluminum alloy cable. The high creep resistance of aluminum alloy cable ensures the stability of connection under the condition of overload and overheating in a certain period of time. Aluminum alloy cable equipped with special copper aluminum excessive terminal using friction welding process, with high weld strength, good conductivity, electrochemical corrosion resistance and other characteristics, better ensure the reliability of its connection.

5. Economic performance; The material cost of aluminum alloy cable is obviously lower than that of copper core cable. According to the calculation, the material cost of aluminum alloy cable with similar electrical properties can be saved more than 20% than that of copper core cable. Due to the aluminum alloy cable light weight, high mechanical strength, small turning radius and small resilience and other characteristics, the aluminum alloy cable has a flexible installation mode, can be used along the wall, can also be used to replace the cheaper ladder bridge installation. Therefore, the average installation cost can be saved by 30% ~ 40%; Also due to the characteristics of aluminum alloy cable, make its installation flexible and light, can save a lot of labor costs, according to statistics, aluminum alloy cable can reduce more than 40% of the working day;

From these five advantages, it can be seen that the use of aluminum alloy cable in the process of engineering construction and use, greatly reduce the cost of finished product protection and on-site care

Many friends asked me can I use copper aluminum terminal aluminum alloy cable? Whether or not to give you five reasons to choose aluminum alloy terminal

The first big reason: copper aluminum transition terminal because of the existence of aluminum terminal, all aluminum defects and deficiencies still exist, this terminal is used to connect aluminum alloy cable, aluminum alloy cable advantage and value is gone, it is better to use aluminum cable directly, because aluminum cable is more economic. The advantage and value of aluminum alloy cable can be brought into full play by using aluminum alloy special terminal.

The second reason: because the copper and aluminum transition terminal is originally used to connect aluminum cable, the installation size of the terminal does not match the size of the terminal equipment, which not only increases the cost of bronze conversion, but also leaves a hidden danger of connection security. Use aluminum alloy special terminal can avoid similar problems.

The third big reason: because copper aluminum transition connection terminal and electrical terminal do not match, increase the conversion bronze medal and often produce the contradiction of cost, down to hard to avoid because of this kind of problem can not be solved and the connection safety hidden trouble that brutal construction brings. Use aluminum alloy special terminal can avoid similar problems.

The fourth reason: because the copper and aluminum transition terminal is originally used to connect aluminum cable, the inner diameter of the terminal and the outer diameter of the cable conductor do not match, special crimping tools must be used, resulting in difficult to standardize the construction, leaving the connection safety risks. Use aluminum alloy special terminal can avoid similar problems. Click the link below to see the details

BLMT Bolt type torque terminal mechanical connector Aluminum alloy wire nose can connect copper/aluminum/aluminum alloy cable

Containing gasket can be adjusted into the square number of the cable with conductive paste conductivity is better, often exported to Europe or Japan and other countries super hard alloy material is not easy to deformation, corruption resistance strong durable in the region electric original genuine good products with quality!

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Post time: Jun-14-2022

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